Tan W, Zhou J, Fang F, Li X, Hong X. A fast gamma-ray source localization method for mobile robots.
Appl Radiat Isot 2022;
188:110377. [PMID:
35841851 DOI:
10.1016/j.apradiso.2022.110377]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/06/2022] [Accepted: 07/06/2022] [Indexed: 11/25/2022]
Abstract
A method for fast estimation of radioactive source parameters is presented. Full use was made of multiple continuous count values, combined with triangulation with four-point sampling method to solve high-dimensional optimization to obtain initialized estimates, which converge to maximum likelihood estimation using an improved hill-climbing algorithm. Cobalt-60 search experiments were conducted in the laboratory using a mobile robot carrying a NaI(TI) detector. Experimental results showed that the method can significantly improve the computational speed.
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